Portable computer



FIG. 1 is a top front perspective view of a portable computer showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a right side view thereof showing the state of the portable computer when the upper display board is open.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a portable computer, as shown and described. 